I have been using them for about three years now. In PA and NJ. They seem to always pass through. I have not had a deer go more than 30yds. after the hit. Until they stop doing that, I'm stuck on them! I used Thunderheads before and it was hard to get me to change from them. I'm glad I did. They hold up pretty good, but I seem to buy more when the season comes around. Just so I know the are sharp.